Friction draft-rigging for railway-cars.



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PATBNTED FEB. 20, 1906.

' 1'. B. TOWNSEND.

PRICTION DRAFT RIGGING FOR RAILWAY GARS.

APPLICATION FILED 00T. 28,1904.

WIT/NESSES;

1w. 812,902. P. 13. TOWNSENI;g

EMOTION DRAFT RIGGING PoR RAILWAY. GARS.

APPLIUATION FILED 00T'. 28,1904.

` SHEETS-SHEET z.

/STTORNEYS PATENTED FEB. 20, 1906-. l

iINrrED STA-riss PATENT OFFICE.

FREDERICK B. TOWSEND, OFF CHICAGO, ILLINOIS, ASSIGNOR TO W. H. MINERCOMPANY, OF f or ILLINOIS.

CHICAGO, ILLINOIS; A CORPORA- FRIGTION DaAFT-RIGGING Fon RAILWAY-CARS'.-

. pecicatio`n of Letters Patent. Apparition nea october 2a, 1904. seraiNo. 230,315.

Patented Feb. 20, 1906.

To all whom, it may concern,.-

I Be it known that I, FREDERIdK B. TOWN- sEND, a citizen of the UnitedStates, residingin Chica o, in the county of Cook Tand State of time thefriction-shell and friction devices need not be increased in size ,orcaused to ocf cupy an undue space-in other Words, to provide adraft-'rigging in which a spring may be employed of larger diameter thanthe shell or casin containing the friction-blocks. A further object isto provide a friction draft-rigging of a simple, eilicient, and durableconstruction in which the side plates or stop-castings are integral Withthe car-frame.

My invention consists in the means I employ to practically accomplishthese objects or results-that is to say, it consists, in connection Withthe draw-bar and draw-bar eX- tension or yoke, of a sliding frictionshell-or casin havin an interior friction-surface, a lura ity of'ction-blocks having interior 'ction-faces in sliding .frictionalengagement With the friction shell or casin one or more wed es forspreading the sllding frictionbloc aspring, said-friction shell orcasing having a spring-chamber of largersize or diameter than theportion of the friction-shell which embraces the friction-blocks,\and ano ening -preferably through the top `of the s ell'or casing for theinsertion and removal 'of the spring. By this means a sprin of largerdiameter than the portion of the icton-shell which surrounds thefriction-blocks maybe employed, and the draft-r' ging is also adaptedWithout change for use o springs i se of any sIze or diameter desired.

My invention further consists in the novel `vconstruction .of 'arts anddevices and novel combinations 4o arts and ydevices herein lvof-this.specnication,Figure 1 is a central ave invented a new anduseful Imvertical longitudinal section of a friction draft-ri gingembodying my invention. Fig. 2 is a p an view, partly 1n horizontalsection.

Fig. 3 is a cross-section on line 3 3 of Fig, 2.

Fig. 4 is a detail perspective view of the slidin friction shell orcasing.

,A n ,the drawings I have illustrated my invention as applied to atank-car in Which the tank itself substantially constitutes the frame ofthe car' but my invention maybe applied to other than tank-cars.

In the drawings, A represents the part of the car-frame to which myinvention is directly applied.

B is the car-coupler; B, the draw-bar eX- tensionl or yoke,` secured tothe draw-bar by bolts or rivets b.

[C is a followerand D is the sliding friction shell or casing, the samebeing preferably 'of' rectangular form 1n cross-section'.

The car-frame A is provided With integral front and rear stops a a',against one ofwhich the follower C abuts and against the other of whichone end of the sliding frictionshell or casing D abuts; this shellorcasing serving also as a follower.

The friction shell or casing D has a frictionchamber D to receive thefriction blocks or devices an'd a spring-chamber D2, of larger size ordiameter than its friction-chamber, to receive the spring,which may thusbe of larger size than could be inserted through the friction-chamber ofthe shell. The frlction shell or casing D has interior friction-faces,Which' are frictionall engaged by the exterior friction-faces f o thesliding friction-blocks F,

which' are preferably four in number. The friction-blocks F -haveinclined or Wed ing faces f f 2, Which are engaged by the'incllned orWedgmg faces g g of the Wedges G G r. The ,friction shell or casing D isprovided with a chamberD2 to receive the s ring H, thischamber being oflarger size or iameter than that portion ofthe shell D which surroundsand frictionallyengages the friction-blocks F, so that when desiredaspring of larger size or diameter may be employed than it would beossible to ICO insert throulgh the. friction end of t e shell or v fcasing D.

o enable afspring H of larger size' than the friction ortion oftheshell. D to be in, V l

' 'serted'in the shel said'shlis'prvidgi Witha spring-inserting opening3 pre era y in its. upper side. thrmigh which a .wearing .Hf

` '55 Wedge or device for spreading said blocks and may be inserted. Oneor more smaller springs l h are referably nested Within the large springH. he spring H abuts at one end against the Wedge G and at its oppositeend agianst the closed end D'L of the shell or casing D. The shell orcasing D is preferably provided lWith rounded corners d to fit thestrap. or yoke B', which embraces the shell D.

The frame A is provided with longitudi- 1o nal recess or chamber A toreceive the draftrigging, and to the integral Walls A2 of which lthedraw-bar guide or spring-plate K, which supports and guides thedraft-rigging, is removably secured by bolts The draw-bar l5 uide orspring-plate K is provided with a ongtudinal recess or channel k toreceive the lower member of the pocket-strap or 4 draw-bar extension B',and thus forms a guide v for the same. The draw-bar guide-plate K zo `isrovided with flanges cthrongh which the bo ts lc extend'. M M arerollers serving as a carry-iron to support the outer end of the draw-bar.

I claim- 1. In a friction draft-rigging, the combination with a draw-barand a draw-bar strap or yoke, of a sliding i'riction shell or casinghaving a friction-chamber and interior friction-faces parallel with thedraw-b ar, and a spring-chamer of larger size ordianieter than thefrictionehamber, sliding iriction-blocks Within the friction-chamber ofsaid shell orcasing having exterior friction-faces parallel to and insliding frictional engagement with said interior fric- 3 5 tion-faces ofsaid shell or casing, a wed or 'device for spreading said blocks and a'spring in the spring-chamber ot said shell'or casing,

said friction shell or chamber having an opening in one of its forinsertion and re- 4o moval of the spring, the Walls of said.iriction-chamber being thicker and stronger than the Walls of said'spring-chamber, substantially as specified.

2. In a friction draft-rigging, the combination with a draw-bar and adraW-barstrap or yoke, of a sliding friction shell or casing having afriction-chamber and interior frictionfaces arallel with the draw-bar,anda springcham er of larger size or diameterthan the 5ofriction-chamber, sliding friction-blocks Within the friction-chamber ofsaid shell or casing having exterior friction-faces parallel to and insliding frictional engagement with said interior friction-faces of saidshell or casing, a

a spring in the spring-chamber of said shell or caslng, sald springbeing of larger size or diameter than the friction-chamber, saidfriction shell or casing having an opening in one 6o of its sides forinsertion and removal of the spring, the Walls of said friction-chamberbeing thicker and stronger than the Walls of aii spring-chamber,substantially as speci- 5` 3: In a friction draft-rigging, thecombinaerases tion with. a ear-traine 'furnished with iront and rearstops, of a draw-bar and draw-har yoke or extension, a follower abuttingagainst one of said stops on the ear-trame, a sliding *friction shell orlcasing abutting at one end against the other stop on the car-trarne,and havin a frintimi-chamber, and a spring-charnoer oi'larger f e thanfriction-ehaniber, ien sheil having interior the draw-bar, and saidlricl'io r-i i O" exterior frictionfac-es parallel to and inl'r'rctional engagement with said interior hictior "n f' s of saidfrietion shell or easing, sl' i ction-blocks in said iri :ii-clnnnber, ai je Vfor spreading said blocks and a spring, said friction shellorcasii'ig having a lateral opening for insertion and .reinovairot thespringtlie'walls of said friction-chamber being thicker and strongerthan the Walls of said spring-chamber, substantiailv as speciiied. 4. Ina friction tirait-rigging, the combination with a carine Vfurnished withiront and rear stops, oi a draw-berend draw-har yoke or extension,afollo'werabutting against one ol said stops on the car-traine, asliding friction shell or casing alnitting at one end against the otherstop on the car-frame, and havin o' a friction-cha inber, and aspring-charnber ot larger size than the friction-chamber,

slidinfr friction-blocks in said friction-charnber, saidsiiding'friction-shell having interior irictirmffaces parallel to thedraw-bar, and said 'friction-'blocks having lexterior frictionacesparallel to and in iiiictional engagement with said interiorfriction-faces ol'V saidtriotion shell or casing, a air oi wedges forspreading said blocks an( a spring, .said sliding friction shell orcasing having a lateral opening through one of its sides For insertionand removal Iof the spring, the walls of said friction-chamber beingthicker and stronger than the walls oi said spring-chamber,substantiallyv specified.

5. Ina vfriction draft-rigging, the combination With a draw-bar and adraw-bar strap or yoke, of a sliding friction shell or casing having afriction-chamber and a spring-chamber and furnished with a lateralopening into the spring-chamber for insertion and removal of the spring,sliding friction-blocks in the friction-chamber, said. slidingfriction-shell having interior friction-faces parallel to the drawbar,and said friction-blocks having exterior h'iction-iaces parallel to andin frictional engagement with said interior friction-faces of saidfriction shell or casing, and a spring in the spring-chamber,th e Wallsof said friction-chamber being thicker and stronger than the Walls ofsaid spring chamber, substantially as specified.

FREDERICK B. T OWN SEND.

Witnesses:

EDMUND Anooon, H. M. MUNDAY.

IOO

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